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US 11,440,621 B2Granted
Bicycle electrical front derailleur
AssigneeShimano Inc.
InventorsAtsushi Komatsu, Shingo Sakurai, Yuta Kurokawa
Life of this patent
Estimating the term…
Abstract
A bicycle electrical front derailleur is provided that basically includes a wireless communication unit, a movable member and an electrical actuation unit. The wireless communication unit is configured to wirelessly receive a control signal. The electrical actuation unit is configured to move the movable member according to the control signal, the electrical actuation unit including an electrical actuator having an output shaft extending downwardly in a state where the bicycle electrical front derailleur is mounted to a bicycle.
Claims12
A bicycle electrical front derailleur comprising:
- a wireless communication unit configured to wirelessly receive a control signal;
- a movable member;
- a linkage including a first link member and a second link member, the second link member being disposed closer to a bicycle frame than the first link member when the front derailleur is mounted to the bicycle frame;
- and
- an electrical actuation unit configured to move the movable member according to the control signal, the electrical actuation unit including an electrical actuator having an output shaft extending downwardly in a state where the bicycle electrical front derailleur is mounted to a bicycle, the electrical actuation unit including a printed circuit board, and the electrical actuator being electrically connected to the printed circuit board, the printed circuit board controlling the electrical actuator, the electrical actuation unit further including a gear reduction unit that is operatively connected to the output shaft of the electrical actuator to transmit rotational movement of the output shaft to the movable member via the linkage, the gear reduction unit having a rotational axis that is parallel to a rotational axis of the output shaft.
2 more elements
Dependencies are inferred from the claim text.